use core::num::NonZero;
use rstest::rstest;
use time::format_description::modifier::{
Day, End, Ignore, Month, MonthRepr, OffsetMinute, OffsetSecond, Ordinal, Padding, Period,
TrailingInput, UnixTimestamp, UnixTimestampPrecision, WeekNumber, WeekNumberRepr, Weekday,
WeekdayRepr, Year, YearRepr,
};
use time::format_description::{BorrowedFormatItem, Component};
use time::macros::{date, format_description, time};
use time::{Date, Time};
#[rstest]
fn nontrivial_string() {
assert!(format_description!(r"").is_empty());
assert!(format_description!(r###""###).is_empty());
assert!(format_description!(b"").is_empty());
assert!(format_description!(br"").is_empty());
assert!(format_description!(br###""###).is_empty());
#[rustfmt::skip]
assert_eq!(
format_description!("foo\
bar\n\r\t\\\"\'\0\x20\x4E\x4e\u{20}\u{4E}\u{4_e}"),
&[BorrowedFormatItem::Literal(b"foobar\n\r\t\\\"'\0 NN NN")]
);
#[rustfmt::skip]
assert_eq!(
format_description!(b"foo\
bar\n\r\t\\\"\'\0\x20\x4E\x4e"),
&[BorrowedFormatItem::Literal(b"foobar\n\r\t\\\"'\0 NN")]
);
}
#[rstest]
fn format_description_version() {
assert_eq!(
format_description!(version = 1, "[["),
&[BorrowedFormatItem::Literal(b"[")]
);
assert_eq!(
format_description!(version = 1, r"\\"),
&[BorrowedFormatItem::Literal(br"\\")]
);
assert_eq!(
format_description!(version = 2, r"\\"),
&[BorrowedFormatItem::Literal(br"\")]
);
}
#[rstest]
fn nested_v1() {
assert_eq!(
format_description!(version = 1, "[optional [[[]]"),
&[BorrowedFormatItem::Optional(&BorrowedFormatItem::Literal(
b"["
))]
);
assert_eq!(
format_description!(version = 1, "[optional [ [[ ]]"),
&[BorrowedFormatItem::Optional(&BorrowedFormatItem::Compound(
&[
BorrowedFormatItem::Literal(b" "),
BorrowedFormatItem::Literal(b"["),
BorrowedFormatItem::Literal(b" "),
]
))]
);
assert_eq!(
format_description!(version = 1, "[first [a][[[]]"),
&[BorrowedFormatItem::First(&[
BorrowedFormatItem::Literal(b"a"),
BorrowedFormatItem::Literal(b"[")
])]
);
}
#[rstest]
fn optional() {
assert_eq!(
format_description!(version = 2, "[optional [:[year]]]"),
&[BorrowedFormatItem::Optional(&BorrowedFormatItem::Compound(
&[
BorrowedFormatItem::Literal(b":"),
BorrowedFormatItem::Component(Component::Year(Default::default()))
]
))]
);
assert_eq!(
format_description!(version = 2, "[optional [[year]]]"),
&[BorrowedFormatItem::Optional(
&BorrowedFormatItem::Component(Component::Year(Default::default()))
)]
);
assert_eq!(
format_description!(version = 2, r"[optional [\[]]"),
&[BorrowedFormatItem::Optional(&BorrowedFormatItem::Literal(
b"["
))]
);
assert_eq!(
format_description!(version = 2, r"[optional [ \[ ]]"),
&[BorrowedFormatItem::Optional(&BorrowedFormatItem::Compound(
&[
BorrowedFormatItem::Literal(b" "),
BorrowedFormatItem::Literal(b"["),
BorrowedFormatItem::Literal(b" "),
]
))]
);
}
#[rstest]
fn first() {
assert_eq!(
format_description!(version = 2, "[first [a]]"),
&[BorrowedFormatItem::First(&[BorrowedFormatItem::Literal(
b"a"
)])]
);
assert_eq!(
format_description!(version = 2, "[first [a] [b]]"),
&[BorrowedFormatItem::First(&[
BorrowedFormatItem::Literal(b"a"),
BorrowedFormatItem::Literal(b"b"),
])]
);
assert_eq!(
format_description!(version = 2, "[first [a][b]]"),
&[BorrowedFormatItem::First(&[
BorrowedFormatItem::Literal(b"a"),
BorrowedFormatItem::Literal(b"b"),
])]
);
assert_eq!(
format_description!(version = 2, r"[first [a][\[]]"),
&[BorrowedFormatItem::First(&[
BorrowedFormatItem::Literal(b"a"),
BorrowedFormatItem::Literal(b"["),
])]
);
assert_eq!(
format_description!(version = 2, r"[first [a][\[\[]]"),
&[BorrowedFormatItem::First(&[
BorrowedFormatItem::Literal(b"a"),
BorrowedFormatItem::Compound(&[
BorrowedFormatItem::Literal(b"["),
BorrowedFormatItem::Literal(b"["),
])
])]
);
assert_eq!(
format_description!(
version = 2,
"[first [[period case:upper]] [[period case:lower]] ]"
),
&[BorrowedFormatItem::First(&[
BorrowedFormatItem::Component(Component::Period(
Period::default()
.with_is_uppercase(true)
.with_case_sensitive(true)
)),
BorrowedFormatItem::Component(Component::Period(
Period::default()
.with_is_uppercase(false)
.with_case_sensitive(true)
)),
])]
);
}
#[rstest]
fn backslash_escape() {
assert_eq!(
format_description!(version = 2, r"[optional [\]]]"),
&[BorrowedFormatItem::Optional(&BorrowedFormatItem::Literal(
b"]"
))]
);
assert_eq!(
format_description!(version = 2, r"[optional [\[]]"),
&[BorrowedFormatItem::Optional(&BorrowedFormatItem::Literal(
b"["
))]
);
assert_eq!(
format_description!(version = 2, r"[optional [\\]]"),
&[BorrowedFormatItem::Optional(&BorrowedFormatItem::Literal(
br"\"
))]
);
assert_eq!(
format_description!(version = 2, r"\\"),
&[BorrowedFormatItem::Literal(br"\")]
);
assert_eq!(
format_description!(version = 2, r"\["),
&[BorrowedFormatItem::Literal(br"[")]
);
assert_eq!(
format_description!(version = 2, r"\]"),
&[BorrowedFormatItem::Literal(br"]")]
);
assert_eq!(
format_description!(version = 2, r"foo\\"),
&[
BorrowedFormatItem::Literal(b"foo"),
BorrowedFormatItem::Literal(br"\"),
]
);
assert_eq!(
format_description!(version = 2, r"\\"),
&[BorrowedFormatItem::Literal(br"\")]
);
assert_eq!(
format_description!(version = 2, r"\["),
&[BorrowedFormatItem::Literal(br"[")]
);
assert_eq!(
format_description!(version = 2, r"\]"),
&[BorrowedFormatItem::Literal(br"]")]
);
assert_eq!(
format_description!(version = 2, r"foo\\"),
&[
BorrowedFormatItem::Literal(b"foo"),
BorrowedFormatItem::Literal(br"\"),
]
);
}
#[rstest]
fn format_description_coverage() {
assert_eq!(
format_description!("[day padding:space][day padding:zero][day padding:none]"),
&[
BorrowedFormatItem::Component(Component::Day(
Day::default().with_padding(Padding::Space)
)),
BorrowedFormatItem::Component(Component::Day(
Day::default().with_padding(Padding::Zero)
)),
BorrowedFormatItem::Component(Component::Day(
Day::default().with_padding(Padding::None)
))
]
);
assert_eq!(
format_description!(
"[offset_minute padding:space][offset_minute padding:zero][offset_minute padding:none]"
),
&[
BorrowedFormatItem::Component(Component::OffsetMinute(
OffsetMinute::default().with_padding(Padding::Space)
)),
BorrowedFormatItem::Component(Component::OffsetMinute(
OffsetMinute::default().with_padding(Padding::Zero)
)),
BorrowedFormatItem::Component(Component::OffsetMinute(
OffsetMinute::default().with_padding(Padding::None)
))
]
);
assert_eq!(
format_description!(
"[offset_second padding:space][offset_second padding:zero][offset_second padding:none]"
),
&[
BorrowedFormatItem::Component(Component::OffsetSecond(
OffsetSecond::default().with_padding(Padding::Space)
)),
BorrowedFormatItem::Component(Component::OffsetSecond(
OffsetSecond::default().with_padding(Padding::Zero)
)),
BorrowedFormatItem::Component(Component::OffsetSecond(
OffsetSecond::default().with_padding(Padding::None)
)),
]
);
assert_eq!(
format_description!("[ordinal padding:space][ordinal padding:zero][ordinal padding:none]"),
&[
BorrowedFormatItem::Component(Component::Ordinal(
Ordinal::default().with_padding(Padding::Space)
)),
BorrowedFormatItem::Component(Component::Ordinal(
Ordinal::default().with_padding(Padding::Zero)
)),
BorrowedFormatItem::Component(Component::Ordinal(
Ordinal::default().with_padding(Padding::None)
)),
]
);
assert_eq!(
format_description!("[month repr:numerical]"),
&[BorrowedFormatItem::Component(Component::Month(
Month::default()
.with_repr(MonthRepr::Numerical)
.with_padding(Padding::Zero)
))]
);
assert_eq!(
format_description!("[week_number repr:iso ]"),
&[BorrowedFormatItem::Component(Component::WeekNumber(
WeekNumber::default()
.with_padding(Padding::Zero)
.with_repr(WeekNumberRepr::Iso)
))]
);
assert_eq!(
format_description!("[weekday repr:long one_indexed:true]"),
&[BorrowedFormatItem::Component(Component::Weekday(
Weekday::default()
.with_repr(WeekdayRepr::Long)
.with_one_indexed(true)
))]
);
assert_eq!(
format_description!("[year repr:full base:calendar]"),
&[BorrowedFormatItem::Component(Component::Year(
Year::default()
.with_repr(YearRepr::Full)
.with_iso_week_based(false)
.with_padding(Padding::Zero)
.with_sign_is_mandatory(false)
))]
);
assert_eq!(
format_description!("[[ "),
&[
BorrowedFormatItem::Literal(b"["),
BorrowedFormatItem::Literal(b" ")
]
);
assert_eq!(
format_description!("[ignore count:2]"),
&[BorrowedFormatItem::Component(Component::Ignore(
Ignore::count(const { NonZero::new(2).unwrap() })
))]
);
assert_eq!(
format_description!("[unix_timestamp precision:nanosecond sign:mandatory]"),
&[BorrowedFormatItem::Component(Component::UnixTimestamp(
UnixTimestamp::default()
.with_precision(UnixTimestampPrecision::Nanosecond)
.with_sign_is_mandatory(true)
))]
);
assert_eq!(
format_description!("[end]"),
&[BorrowedFormatItem::Component(
Component::End(End::default())
)]
);
assert_eq!(
format_description!("[end trailing_input:prohibit]"),
&[BorrowedFormatItem::Component(Component::End(
End::default().with_trailing_input(TrailingInput::Prohibit)
))]
);
assert_eq!(
format_description!("[end trailing_input:discard]"),
&[BorrowedFormatItem::Component(Component::End(
End::default().with_trailing_input(TrailingInput::Discard)
))]
);
}
#[rstest]
fn date_coverage() {
assert_eq!(Ok(date!(2000-001)), Date::from_ordinal_date(2000, 1));
assert_eq!(Ok(date!(2019-W01-1)), Date::from_ordinal_date(2018, 365));
assert_eq!(Ok(date!(2021-W52-6)), Date::from_ordinal_date(2022, 1));
assert_eq!(Ok(date!(2021-W34-5)), Date::from_ordinal_date(2021, 239));
}
#[rstest]
fn time_coverage() {
assert_eq!(time!(12 AM), Time::MIDNIGHT);
assert_eq!(Ok(time!(12 PM)), Time::from_hms(12, 0, 0));
}
mod demo {
#[expect(dead_code)]
type Result<T> = core::result::Result<T, ()>;
#[expect(dead_code)]
type Option = core::option::Option<()>;
time::serde::format_description!(
seconds,
OffsetDateTime,
"[year]-[month]-[day]T[hour]:[minute]:[second]Z"
);
}